In the context of cardiology, what does the term "stenosis" refer to?

The term "stenosis" specifically refers to the narrowing of a blood vessel or valve within the cardiovascular system. This condition can impede blood flow, affecting the heart's ability to function efficiently. For instance, aortic stenosis involves the narrowing of the aortic valve, which can lead to various complications such as heart failure or reduced cardiac output.

In contrast, the other terms relate to different aspects of cardiac health. Heart muscle inflammation refers to a condition known as myocarditis, which involves swelling and damage to the heart muscle, often resulting from infections or autoimmune responses. Weakening of the vessel wall is characterized by conditions such as aneurysms or vascular diseases, which can lead to complications like rupture or hemorrhage. Abnormal heart rhythm encompasses various arrhythmias, which involve irregular heartbeats that can affect the heart's ability to pump blood effectively. Understanding these distinctions enhances comprehension of cardiovascular conditions and their implications.